Unit Converter Hub
Free, fast, and accurate online conversions for 251+ unit pairs across 8+ categories. Trusted by millions worldwide.
Conversion Categories
Length
Convert between metric and imperial length units including meters, feet, inches, kilometers, and miles.
Weight & Mass
Convert between weight and mass units such as kilograms, pounds, ounces, grams, and stones.
Temperature
Convert between Celsius, Fahrenheit, and Kelvin temperature scales.
Area
Convert between area units including square meters, square feet, acres, and hectares.
Volume
Convert between volume units such as liters, gallons, cups, milliliters, and cubic meters.
Speed
Convert between speed units including km/h, mph, m/s, and knots.
Time
Convert between time units including seconds, minutes, hours, days, and weeks.
Digital Storage
Convert between digital storage units such as bytes, kilobytes, megabytes, gigabytes, and terabytes.
Popular Conversions
Millimeter to Centimeter
mm → cm
Centimeter to Meter
cm → m
Centimeter to Inch
cm → in
Centimeter to Foot
cm → ft
Meter to Centimeter
m → cm
Meter to Foot
m → ft
Meter to Yard
m → yd
Kilometer to Meter
km → m
Kilometer to Mile
km → mi
Inch to Centimeter
in → cm
Inch to Millimeter
in → mm
Inch to Foot
in → ft
Foot to Meter
ft → m
Foot to Centimeter
ft → cm
Foot to Inch
ft → in
Yard to Meter
yd → m
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Scientifically accurate formulas tested against standard references.
All Categories
Length, weight, temperature, area, volume, speed, time, data, and more.